Have fed a mixture of raw (morning) and dry kibble (Orjen / Arcana) to our pack of six dogs for years. Kept the kibble because the pet food companies did a really good job convincing me that raw meat is deficient in vital nutrients. Also added dehydrated "toppers," again due to the fear of nutrient deficiency, but at a fraction of the ratio recommended by the manufacture - this was stopped because my boys stopped eating their food.
Despite our best intentions, two were diagnosed with cancer last year (liver tumor and sarcoma).
So, per Long Living Pets and Keto Pet sanctuary and have switched to a completely raw diet. Am trying to feed four a ratio of 80/20 and Joey and Max 70/30. Determing what constitutes 80/20 or 70/30 ratio is not easy unless you choose to just feed grocery store ground beef. Going through a lot of butter and olive oil (coconut oil isn't well liked -especially by our two cancer boys). Just keeping an eye on their weight and energy level and adjusting to these external signs. Have not invested in a keto meter as I am not sure how the numbers would corrolate to canine health (Dr. Eric Westman is not a supporter of keto meters for this reason).
I guess my point, after all the rambling, is that expensive premium kibble may not be any better than average pet kibble in keeping our pets healthy. Time will tell if completely raw will be an improvement.